117211640 has 96 divisors (see below), whose sum is σ = 326501280. Its totient is φ = 37080576.

The previous prime is 117211621. The next prime is 117211643. The reversal of 117211640 is 46112711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117211643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46082 + ... + 48558.

It is an arithmetic number, because the mean of its divisors is an integer number (3401055).

Almost surely, 2^117211640 is an apocalyptic number.

117211640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117211640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163250640).

117211640 is an abundant number, since it is smaller than the sum of its proper divisors (209289640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117211640 is a wasteful number, since it uses less digits than its factorization.

117211640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2504 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 117211640 is about 10826.4324687313. The cubic root of 117211640 is about 489.3920545831.

The spelling of 117211640 in words is "one hundred seventeen million, two hundred eleven thousand, six hundred forty".